:root { --primary: #3B5EE8; }
        h1 {
            background: linear-gradient(90deg, #E63946, #FFD700, #2ECC40, #3B5EE8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .btn {
            background: linear-gradient(90deg, #E63946, #FFD700, #2ECC40, #3B5EE8);
        }
        .btn:hover {
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.3), 0 4px 20px rgba(59, 94, 232, 0.3);
        }